Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

With a dedicated coloring pages for each planet in our solar system, as well as the sun and moon, these are great coloring ...

Seventeen years after it was demoted from planet to dwarf planet ... as the sun turns into a white dwarf, it will lose about half of its mass, and the solar system will expand, the orbits will ...

you’ll find it necessary to include a lot of other dwarf planets. Without a firm lower limit on size or mass, we’re forced to say the solar system has hundreds of planets—maybe thousands.

He says that instead of limiting planets to only eight in the solar system, we could include all of the dwarf planets and even moons. He says he often gets the question, “How will children ...